Originally Posted by parkave335is
So the jb4 makes a nice difference huh??? Which map are you running on?? I should be getting my 335is by the end of the week or early next week. Its a lease so im keeping it basically stock but def going to get the jb4.
Yes it makes a pretty good diffrence LOL
MAP 5, its autotune. or some reason im running 14.5-15 PSI with stock internals. reccomend map is 1 and 5, 1 is 13.5 psi with stock everything. downpipes r coming in and BOV and intake and filters.